PATIENT CHARACTERISTICS: Age: 18 and over Performance status: WHO 0-1 Life expectancy: Not specified Hematopoietic: Hemoglobin at least 9 g/dL Neutrophil count at least 1,500/mm3 Platelet count at least 100,000/mm3 Hepatic: Bilirubin no greater than 1.5 times upper limit of normal (ULN) Alkaline phosphatase no greater than 2.5 times ULN ALT or AST no greater than 2.5 times ULN Albumin at least 2.5 g/dL Renal: Creatinine no greater than 1.5 mg/dL OR Creatinine clearance at least 40 mL/min (60 mL/min if treated with prior cisplatin therapy) Cardiovascular: No congestive heart failure or angina pectoris (even if medically controlled) No myocardial infarction within the past year No uncontrolled hypertension or arrhythmia Other: No other serious illness or medical condition No history of significant neurologic disorder (other than metastatic disease or psychiatric disorder) No uncontrolled infection No other malignancy within the past 5 years except curatively treated nonmelanoma skin cancer, carcinoma in situ or the cervix, or other surgically cured cancer No other condition that would preclude study Not pregnant or nursing Negative pregnancy test Fertile patients must use effective contraception during and for at least 6 months after study